Do You Suffer From the Tetris Effect?

Dick Ward writes: "You’re looking at the tiles in your bathroom, a building under construction, a brick wall, a patterned rug, or even a sweater. You can’t just glance away and ignore the pattern like you usually do. You find yourself picking out pieces and fitting them together in your mind. You might even see blocks falling when you close your eyes. It’s called the “Tetris Effect,” and it happens to people that play the game for an extended period of time. That doesn’t mean it only happens with ‘Tetris,’ though. I’ve gotten wrapped up in plenty of games in the past to the point of similar hallucinatory episodes, and I’m sure that I’m not the only one."
(Culture, Elder Scrolls II: Daggerfall, Retro, Tetris, Wing Commander)

I suffer from a bad case of "exploding barrel/gas-tank" syndrome, where if i see a lone tank on a street, around the house, or on the back of a truck, my subconcious automatically acts out my hands shooting at it.